A report on Monday suggests Apple's recently modified OS X app signing policy is the result of an undisclosed Developer Portal security breach that leaked keys for multiple services, including Gatekeeper.

As Mac users await this fall's launch of OS X Yosemite, Apple's current Mac operating system received a minor update on Monday, with OS X Mavericks 10.9.4 fixing minor bugs related to Wi-Fi and wake from sleep.

One week after seeding the last OS X 10.9.4 Mavericks beta, Apple on Thursday issued to developers a new build of the upcoming maintenance update, with the latest version coming with minor bug fixes and minor tweaks.

Apple on Wednesday pushed out a minor update for its iTunes media suite, fixing a podcast-related bug and various stability improvements. Developers were also provided with the first beta of OS X 10.9.4, arriving a few weeks after OS X 10.9.3 became available to the public.

In an update to a support document on Friday, Apple offers details on the changes and improvements -- including expanded display compatibility -- made to 4K monitor support under the company's latest OS X Mavericks 10.9.3 release.

Apple on Thursday released OS X 10.9.3, a minor update for its Mavericks Mac operating system, bringing improved 4K display support for the latest Mac Pro and 15-inch MacBook Pro, along with other bug fixes and improvements.

Apple on Wednesday released to developers the latest version of its upcoming OS X maintenance update, asking beta testers to concentrate on graphics drivers, audio, Safari and iTunes contacts and calendar syncing over USB.